Research, information and education regarding Congenital Heart Defects. Many do not realize how common heart defects occur – it is the number one defect affecting newborns. A growing population of our littlest heart warriors means Adults with Congenital Heart Defects will continue to grow. Posts below focus on the medicine & advocate side of Congenital Heart Defects. Be sure to check out the section of “Heart Mom” for the personal side of the heart world.